General movement for split-type household electric range hood

Abstract

A fan and a hood of a range hood are installed in one, the appearance is bulky, and the outer packing can not be often changed for new. So many structural defects exist in the integrated installation. When the split installation of the fan and the hood is applied, noise is far away from ears, an exhaust pipe can be directly led outdoors, a ball rolling type magnetic lock check valve is arranged at the exit of the exhaust pipe to eliminate other kitchen odor, and the smoke-collection hood is lifted by a smoke pipe, thus a plurality of practical effects are derived. However, the structural transformation of household electric range hoods will affect thousands of families. A general movement for split-type household electric range hood is developed to promote the transformation of conventional household range hoods into the split structure and realize the upgrading.

Description

technical field [0001] The invention belongs to the technical field of air purification devices, in particular to a household electric range hood, in particular to a universal core of a split type household electric range hood. Background technique [0002] Electric range hoods have already entered thousands of households. During the long period of use, the shape of the shell and the installation method have also been fixed. It is a convention that a rectangular smoke collection hood is hoisted at the lower end of the vertical square tube and hung on the wall above the stove. , and the fan generally adopts a wide impeller, and the input power and exhaust air volume are gradually becoming the same, which makes it possible to develop a common movement for split range hoods and promote the structural transformation of household electric range hoods. [0003] The fan of the traditional range hood is installed in the flue at the junction of the exhaust pipe and the smoke collecti...

AI Technical Summary

Problems solved by technology

[0003] The fan of the traditional range hood is installed in the flue at the junction of the exhaust pipe and the smoke collection hood. The fan of the European range hood is also installed in the square tube of the hoisting smoke collection hood. The fan is installed in the hood. It can be said that the existing range hoods belong to the one-piece structure of the hood, and all of them have structural defects. The one-piece range hood has a bulky body, and no matter how gorgeous the outer packaging is, it can only be a functional garment wrapped around the bloated body; 2. The range hood shell must bear the weight of the fan, and it must be made of a slightly thicker metal plate , If you want a gorgeous outer packaging, you have to use expensive stainless steel plates, and it cannot be separated from the outer shell into two pieces of skin. Not only is the cost expensive, but the outer packaging cannot be replaced frequently; 3. The fan is originally a noise source, and the hood is connected. , the hoisting tube and the smoke hood become the loudspeaker that transmits the noise. When cooking, it is like putting a tweeter next to the ear; For suction installation, the smoke exhaust pipe must pass through one or two 90-degree elbows, and 20%-40% of the energy will be consumed in the bends; The air supply port of the hood is hidden deep in the shell of the range hood, and the two valves are stuck by grease. The most likely failure is that only one piece can be opened, which reduces the flow of the range hood by half! Moreover, the backflowing airflow will cause the closed valve to vibrate, causing odors in the kitchen. These faults are not easy to find and difficult to remove, which has become a chronic problem; It needs to be reduced accordingly, so the "near-suction" range hood that has been on the market recently has two fans under the fume collecting hood, and upper and lower air inlets are set on the fume collecting hood panel, which expands the range of oil fume suction, but the two fans share one The smoke exhaust pipes must interfere with each other. In addition, the fan can only be installed sideways in the inclined smoke collection hood. The dripping oil must be collected at a fixed part of the impeller, which will cause the impeller to rotate unbalanced, the efficiency will drop sharply, and the noise will increase sharply. , it can be seen that the improved version of the "near-suction" range hood still bears a heavy burden of structural defects.

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